E5F9 BUGS: in colorbar: divide-by-zero, and undesired masked array by efiring · Pull Request #8812 · matplotlib/matplotlib · GitHub
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BUGS: in colorbar: divide-by-zero, and undesired masked array #8812

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Merged
merged 1 commit into from
Jun 27, 2017
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BUGS: in colorbar: divide-by-zero, and undesired masked array #8812

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12 changes: 7 additions & 5 deletions lib/matplotlib/colorbar.py
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Original file line number Diff line number Diff line change
Expand Up @@ -801,6 +801,7 @@ def _proportional_y(self):
y = y / (self._boundaries[-1] - self._boundaries[0])
else:
y = self.norm(self._boundaries.copy())
y = np.ma.filled(y, np.nan)
if self.extend == 'min':
# Exclude leftmost interval of y.
clen = y[-1] - y[1]
Expand All @@ -811,21 +812,22 @@ def _proportional_y(self):
clen = y[-2] - y[0]
automin = (y[1] - y[0]) / clen
automax = (y[-2] - y[-3]) / clen
else:
elif self.extend == 'both':
# Exclude leftmost and rightmost intervals in y.
clen = y[-2] - y[1]
automin = (y[2] - y[1]) / clen
automax = (y[-2] - y[-3]) / clen
extendlength = self._get_extension_lengths(self.extendfrac,
automin, automax,
default=0.05)
if self.extend in ('both', 'min', 'max'):
extendlength = self._get_extension_lengths(self.extendfrac,
automin, automax,
default=0.05)
if self.extend in ('both', 'min'):
y[0] = 0. - extendlength[0]
if self.extend in ('both', 'max'):
y[-1] = 1. + extendlength[1]
yi = y[self._inside]
norm = colors.Normalize(yi[0], yi[-1])
y[self._inside] = norm(yi)
y[self._inside] = np.ma.filled(norm(yi), np.nan)
return y

def _mesh(self):
Expand Down
0